/* =================================================================
   BILAN PSYCHOPÉDAGOGIQUE — Complete Stylesheet
   Art direction: Light, clinical, modern, cool-toned, spacious
   Fonts: Clash Display + General Sans (Fontshare)
   ================================================================= */

/* ─── RESET ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; scroll-padding-top: 80px; }
body { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
img, svg { display: block; max-width: 100%; }
button { cursor: pointer; border: none; background: none; font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

/* ─── DESIGN TOKENS ─── */
:root {
  /* Palette */
  --indigo: #312E81;
  --indigo-light: #4338CA;
  --blue: #3B82F6;
  --blue-light: #60A5FA;
  --amber: #F59E0B;
  --amber-dark: #D97706;
  --amber-light: #FCD34D;
  --white: #FFFFFF;
  --surface-cool: #F8FAFC;
  --slate-900: #0F172A;
  --slate-700: #334155;
  --slate-500: #64748B;
  --slate-300: #CBD5E1;
  --slate-200: #E2E8F0;
  --slate-100: #F1F5F9;

  /* Semantic colors */
  --color-bg: var(--white);
  --color-surface: var(--surface-cool);
  --color-surface-2: var(--slate-100);
  --color-text: var(--slate-900);
  --color-text-muted: var(--slate-500);
  --color-text-secondary: var(--slate-700);
  --color-primary: var(--indigo);
  --color-accent: var(--blue);
  --color-cta: var(--amber);
  --color-cta-hover: var(--amber-dark);
  --color-border: rgba(15, 23, 42, 0.1);
  --color-border-strong: rgba(15, 23, 42, 0.18);

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08), 0 1px 3px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.1), 0 2px 6px rgba(15, 23, 42, 0.04);
  --shadow-card: 0 1px 3px rgba(15, 23, 42, 0.06), 0 6px 16px rgba(15, 23, 42, 0.04);

  /* Typography */
  --font-display: 'Clash Display', system-ui, sans-serif;
  --font-body: 'General Sans', system-ui, sans-serif;

  /* Fluid type scale */
  --text-xs: clamp(0.75rem, 0.7rem + 0.2vw, 0.8125rem);
  --text-sm: clamp(0.8125rem, 0.78rem + 0.15vw, 0.875rem);
  --text-base: clamp(0.9375rem, 0.9rem + 0.2vw, 1rem);
  --text-lg: clamp(1.0625rem, 1rem + 0.3vw, 1.1875rem);
  --text-xl: clamp(1.25rem, 1.1rem + 0.7vw, 1.5rem);
  --text-2xl: clamp(1.5rem, 1.2rem + 1.5vw, 2.25rem);
  --text-3xl: clamp(2rem, 1.4rem + 3vw, 3.5rem);
  --text-hero: clamp(2.5rem, 1.5rem + 5vw, 4.5rem);

  /* Spacing (4px base) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Layout */
  --content-narrow: 720px;
  --content-default: 1040px;
  --content-wide: 1200px;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* ─── DARK MODE ─── */
[data-theme="dark"] {
  --color-bg: #0C0F1A;
  --color-surface: #131729;
  --color-surface-2: #1A1F36;
  --color-text: #E2E8F0;
  --color-text-muted: #94A3B8;
  --color-text-secondary: #CBD5E1;
  --color-primary: #818CF8;
  --color-accent: #60A5FA;
  --color-cta: #FBBF24;
  --color-cta-hover: #F59E0B;
  --color-border: rgba(226, 232, 240, 0.1);
  --color-border-strong: rgba(226, 232, 240, 0.16);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.25), 0 1px 3px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.35), 0 2px 6px rgba(0, 0, 0, 0.2);
  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.2), 0 6px 16px rgba(0, 0, 0, 0.15);
}

/* ─── BASE ─── */
body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  transition: background 0.3s ease, color 0.3s ease;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary);
  color: var(--white);
  border-radius: var(--radius-sm);
  z-index: 100;
  font-size: var(--text-sm);
}
.skip-link:focus { top: var(--space-2); }

/* ─── CONTAINER ─── */
.container {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-5);
}
@media (min-width: 768px) { .container { padding-inline: var(--space-8); } }

.container--narrow {
  max-width: var(--content-narrow);
}

/* ─── HEADER ─── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  transition: transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out), background 0.3s ease;
}
[data-theme="dark"] .site-header {
  background: rgba(12, 15, 26, 0.88);
}
.site-header.header--hidden { transform: translateY(-100%); }
.site-header.header--scrolled { box-shadow: var(--shadow-sm); }

.header-inner {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding: var(--space-3) var(--space-5);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}
@media (min-width: 768px) { .header-inner { padding-inline: var(--space-8); } }

.logo-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  transition: opacity var(--transition-interactive);
  flex-shrink: 0;
}
.logo-link:hover { opacity: 0.8; }
.logo-icon { color: var(--color-primary); }
.logo-text {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-text);
  white-space: nowrap;
}
@media (max-width: 480px) {
  .logo-text { display: none; }
}

/* Nav */
.main-nav { display: none; }
@media (min-width: 900px) {
  .main-nav { display: block; }
}
.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}
.nav-link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  transition: color var(--transition-interactive), background var(--transition-interactive);
  white-space: nowrap;
}
.nav-link:hover {
  color: var(--color-text);
  background: var(--color-surface);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* Theme toggle */
.theme-toggle {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  transition: background var(--transition-interactive), color var(--transition-interactive);
  color: var(--color-text-muted);
}
.theme-toggle:hover { background: var(--color-surface); color: var(--color-text); }
.icon-moon { display: none; }
[data-theme="dark"] .icon-sun { display: none; }
[data-theme="dark"] .icon-moon { display: block; }

/* Mobile menu button */
.mobile-menu-btn {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--color-text);
  transition: background var(--transition-interactive);
}
.mobile-menu-btn:hover { background: var(--color-surface); }
@media (min-width: 900px) { .mobile-menu-btn { display: none; } }

.menu-line {
  transition: transform 0.3s var(--ease-out), opacity 0.3s var(--ease-out);
  transform-origin: center;
}
.mobile-menu-btn[aria-expanded="true"] .menu-line-1 {
  transform: translateY(6px) rotate(45deg);
}
.mobile-menu-btn[aria-expanded="true"] .menu-line-2 {
  opacity: 0;
}
.mobile-menu-btn[aria-expanded="true"] .menu-line-3 {
  transform: translateY(-6px) rotate(-45deg);
}

/* Mobile nav overlay */
@media (max-width: 899px) {
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    padding: var(--space-4) var(--space-5);
  }
  .main-nav.nav--open { display: block; }
  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-1);
  }
  .nav-link {
    display: block;
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-base);
    border-radius: var(--radius-md);
  }
}

/* Desktop line break helper */
.br-desktop { display: none; }
@media (min-width: 640px) { .br-desktop { display: block; } }

/* ─── HERO (LIGHT THEME) ─── */
.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(var(--space-20), 10vw, var(--space-32)) var(--space-5) var(--space-12);
  min-height: 80vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
@media (min-width: 768px) { .hero { padding-inline: var(--space-8); } }

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 40%, rgba(99, 102, 241, 0.08) 0%, transparent 70%),
    radial-gradient(ellipse 60% 50% at 80% 30%, rgba(59, 130, 246, 0.06) 0%, transparent 60%),
    linear-gradient(165deg, #F0F4FF 0%, #EEF2FF 30%, #F5F7FF 60%, #FFFFFF 100%);
  z-index: 0;
}
/* Subtle geometric shapes in hero */
.hero-bg::before {
  content: '';
  position: absolute;
  top: 10%;
  right: -5%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.06) 0%, transparent 70%);
}
.hero-bg::after {
  content: '';
  position: absolute;
  bottom: -10%;
  left: 10%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.05) 0%, transparent 70%);
}

[data-theme="dark"] .hero-bg {
  background:
    radial-gradient(ellipse 80% 60% at 20% 40%, rgba(99, 102, 241, 0.1) 0%, transparent 70%),
    radial-gradient(ellipse 60% 50% at 80% 30%, rgba(59, 130, 246, 0.08) 0%, transparent 60%),
    linear-gradient(165deg, #070A14 0%, #0C0F1A 30%, #131729 60%, #0A1628 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin-inline: auto;
  text-align: left;
}
@media (min-width: 768px) {
  .hero-content { text-align: left; max-width: 800px; margin-inline: auto; }
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-radius: var(--radius-full);
  background: rgba(59, 130, 246, 0.12);
  color: var(--color-accent);
}
.badge--hero {
  background: rgba(49, 46, 129, 0.1);
  color: var(--indigo);
}
[data-theme="dark"] .badge--hero {
  background: rgba(255, 255, 255, 0.15);
  color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(4px);
}
.badge--amber {
  background: rgba(245, 158, 11, 0.14);
  color: var(--amber-dark);
}
[data-theme="dark"] .badge--amber {
  background: rgba(251, 191, 36, 0.14);
  color: var(--amber-light);
}
.badge--small {
  font-size: 0.6875rem;
  padding: 2px var(--space-2);
  margin-top: var(--space-2);
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 1.2rem + 4vw, 4.5rem);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--indigo);
  margin-top: var(--space-5);
  overflow-wrap: normal;
  word-break: normal;
  hyphens: none;
  -webkit-hyphens: none;
}
[data-theme="dark"] .hero-title {
  color: var(--white);
}

.hero-subtitle {
  font-size: var(--text-lg);
  line-height: 1.55;
  color: var(--slate-700);
  margin-top: var(--space-5);
  max-width: 560px;
}
[data-theme="dark"] .hero-subtitle {
  color: rgba(255, 255, 255, 0.75);
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-8);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: background var(--transition-interactive), color var(--transition-interactive), box-shadow var(--transition-interactive), transform var(--transition-interactive);
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--color-cta);
  color: var(--slate-900);
  box-shadow: 0 1px 3px rgba(245, 158, 11, 0.25);
}
.btn--primary:hover {
  background: var(--color-cta-hover);
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}
.btn--outline {
  background: transparent;
  color: var(--indigo);
  box-shadow: inset 0 0 0 1.5px rgba(49, 46, 129, 0.3);
}
.btn--outline:hover {
  background: rgba(49, 46, 129, 0.06);
  box-shadow: inset 0 0 0 1.5px rgba(49, 46, 129, 0.5);
}
[data-theme="dark"] .btn--outline {
  color: var(--white);
  box-shadow: inset 0 0 0 1.5px rgba(255, 255, 255, 0.35);
}
[data-theme="dark"] .btn--outline:hover {
  background: rgba(255, 255, 255, 0.1);
  box-shadow: inset 0 0 0 1.5px rgba(255, 255, 255, 0.5);
}
.btn--secondary {
  background: var(--color-surface);
  color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-border);
}
.btn--secondary:hover {
  background: var(--color-surface-2);
  box-shadow: var(--shadow-sm);
}
.btn--full { width: 100%; }

/* Hero stats */
.hero-stats {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  margin-top: clamp(var(--space-10), 6vw, var(--space-16));
  max-width: 800px;
  margin-inline: auto;
  padding-top: var(--space-6);
  border-top: 1px solid rgba(49, 46, 129, 0.1);
}
[data-theme="dark"] .hero-stats {
  border-top-color: rgba(255, 255, 255, 0.12);
}
@media (min-width: 640px) {
  .hero-stats { grid-template-columns: repeat(4, 1fr); }
}

.stat { text-align: center; }
.stat-value {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--indigo);
  letter-spacing: -0.02em;
}
[data-theme="dark"] .stat-value {
  color: var(--white);
}
.stat-label {
  font-size: var(--text-xs);
  color: var(--slate-500);
  margin-top: var(--space-1);
  display: block;
}
[data-theme="dark"] .stat-label {
  color: rgba(255, 255, 255, 0.55);
}

/* ─── SECTIONS ─── */
.section {
  padding: clamp(var(--space-16), 8vw, var(--space-24)) 0;
}
.section--light { background: var(--color-surface); }
.section--white { background: var(--color-bg); }

/* Updated: BPAE section is now light indigo instead of dark gradient */
.section--bpae-light {
  background:
    radial-gradient(ellipse 70% 50% at 30% 60%, rgba(99, 102, 241, 0.05) 0%, transparent 70%),
    linear-gradient(170deg, #EEF2FF 0%, #E0E7FF 50%, #EDE9FE 100%);
}
[data-theme="dark"] .section--bpae-light {
  background:
    radial-gradient(ellipse 70% 50% at 30% 60%, rgba(99, 102, 241, 0.06) 0%, transparent 70%),
    linear-gradient(170deg, #0C0F1A 0%, #131729 50%, #0A1628 100%);
}

.section-header {
  margin-bottom: clamp(var(--space-8), 5vw, var(--space-12));
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-top: var(--space-3);
  color: var(--color-text);
}

.section-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  margin-top: var(--space-3);
  max-width: 560px;
  line-height: 1.6;
}
.section-desc strong { color: var(--color-text); font-weight: 600; }

/* ─── DEFINITION SECTION ─── */
.definition-grid {
  display: grid;
  gap: clamp(var(--space-8), 4vw, var(--space-12));
}
@media (min-width: 768px) {
  .definition-grid { grid-template-columns: 1.2fr 1fr; }
}

.definition-main p {
  color: var(--color-text-secondary);
  line-height: 1.7;
}
.definition-main p + p { margin-top: var(--space-4); }
.text-lead {
  font-size: var(--text-lg);
  line-height: 1.6;
  color: var(--color-text);
}
.text-lead strong { color: var(--color-primary); }
[data-theme="dark"] .text-lead strong { color: var(--color-accent); }
.definition-main strong { font-weight: 600; }

.pullquote {
  padding: var(--space-6);
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  border-left: 3px solid var(--color-accent);
  box-shadow: var(--shadow-card);
}
.pullquote p {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 500;
  line-height: 1.55;
  color: var(--color-text);
  font-style: italic;
}

.definition-meta {
  margin-top: var(--space-6);
  padding: var(--space-5);
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.definition-meta h3 {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}
.meta-list li {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-border);
}
.meta-list li:last-child { border-bottom: none; }
.meta-list li::before {
  content: '→';
  margin-right: var(--space-2);
  color: var(--color-accent);
}

/* ─── REASONS GRID ─── */
.reasons-grid {
  display: grid;
  gap: var(--space-5);
  grid-template-columns: 1fr;
}
@media (min-width: 640px) {
  .reasons-grid { grid-template-columns: repeat(2, 1fr); }
}

.reason-card {
  padding: var(--space-6);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition: box-shadow var(--transition-interactive), transform var(--transition-interactive);
}
.reason-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.reason-icon {
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}

.reason-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-2);
  letter-spacing: -0.01em;
}
.reason-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ─── BPAE FEATURES GRID (updated for light bg) ─── */
.features-grid {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: 1fr;
}
@media (min-width: 640px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .features-grid { grid-template-columns: repeat(3, 1fr); }
}

.feature-card {
  padding: var(--space-6);
  background: var(--white);
  border: 1px solid rgba(49, 46, 129, 0.1);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-interactive), transform var(--transition-interactive);
}
.feature-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
[data-theme="dark"] .feature-card {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.08);
}

.feature-number {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: rgba(49, 46, 129, 0.15);
  margin-bottom: var(--space-3);
  letter-spacing: -0.02em;
}
[data-theme="dark"] .feature-number {
  color: rgba(255, 255, 255, 0.2);
}
.feature-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-2);
  letter-spacing: -0.01em;
  color: var(--color-text);
}
[data-theme="dark"] .feature-card h3 { color: var(--white); }
.feature-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.feature-card--highlight {
  background: rgba(245, 158, 11, 0.06);
  border-color: rgba(245, 158, 11, 0.2);
}
.feature-card--highlight:hover {
  background: rgba(245, 158, 11, 0.1);
}
.feature-card--highlight .feature-number { color: rgba(245, 158, 11, 0.3); }

/* ─── DOMAINS GRID ─── */
.domains-grid {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: 1fr;
}
@media (min-width: 540px) {
  .domains-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 900px) {
  .domains-grid { grid-template-columns: repeat(3, 1fr); }
}

.domain-card {
  position: relative;
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: box-shadow var(--transition-interactive), transform var(--transition-interactive);
}
.domain-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.domain-icon {
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}
.domain-number {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  opacity: 0.5;
}
.domain-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  margin-bottom: var(--space-2);
  letter-spacing: -0.01em;
}
.domain-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.55;
}

/* Domain detail text */
.domain-detail {
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.5;
}
.domain-detail strong {
  color: var(--color-text-secondary);
  font-weight: 600;
}

.domain-card--highlight {
  background: rgba(245, 158, 11, 0.06);
  border-color: rgba(245, 158, 11, 0.2);
}
[data-theme="dark"] .domain-card--highlight {
  background: rgba(251, 191, 36, 0.06);
  border-color: rgba(251, 191, 36, 0.15);
}
.domain-card--highlight .domain-icon { color: var(--amber); }

/* ─── CALIBRATION / ÉTALONNAGE SECTION ─── */
.calibration-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}
@media (min-width: 768px) {
  .calibration-hero { grid-template-columns: 1fr 1fr; }
}

.calibration-big-number {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: var(--space-8);
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border);
  text-align: center;
}
[data-theme="dark"] .calibration-big-number {
  background: var(--color-surface);
}
.big-number {
  font-family: var(--font-display);
  font-size: clamp(3rem, 2rem + 5vw, 5rem);
  font-weight: 700;
  color: var(--indigo);
  line-height: 1;
  letter-spacing: -0.03em;
}
[data-theme="dark"] .big-number { color: var(--color-accent); }
.big-number-label {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  margin-top: var(--space-2);
  font-weight: 500;
}
.big-number-sub {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

/* Age groups grid */
.age-groups-card {
  padding: var(--space-6);
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border);
}
[data-theme="dark"] .age-groups-card {
  background: var(--color-surface);
}
.age-groups-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-5);
  letter-spacing: -0.01em;
}
.age-groups-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}
@media (min-width: 480px) {
  .age-groups-grid { grid-template-columns: repeat(4, 1fr); }
}
.age-group-item {
  text-align: center;
  padding: var(--space-3) var(--space-2);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}
[data-theme="dark"] .age-group-item {
  background: var(--color-surface-2);
}
.age-group-range {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  display: block;
}
.age-group-count {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: 2px;
  display: block;
}

/* NIVET stratification */
.nivet-card {
  padding: var(--space-6);
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border);
}
[data-theme="dark"] .nivet-card {
  background: var(--color-surface);
}
.nivet-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-5);
  letter-spacing: -0.01em;
}
.nivet-bars {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.nivet-bar-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.nivet-bar-label {
  display: flex;
  justify-content: space-between;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
}
.nivet-bar-count {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--indigo);
}
[data-theme="dark"] .nivet-bar-count { color: var(--color-accent); }
.nivet-bar-track {
  height: 8px;
  background: var(--color-surface-2);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.nivet-bar-fill {
  height: 100%;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, var(--indigo-light), var(--blue));
  transition: width 1s var(--ease-out);
}
[data-theme="dark"] .nivet-bar-fill {
  background: linear-gradient(90deg, #818CF8, var(--blue-light));
}

.calibration-note {
  margin-top: var(--space-6);
  padding: var(--space-4) var(--space-5);
  background: rgba(59, 130, 246, 0.06);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-accent);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
}
[data-theme="dark"] .calibration-note {
  background: rgba(96, 165, 250, 0.08);
}

/* ─── SCORING SECTION ─── */
.scoring-layout {
  display: grid;
  gap: var(--space-8);
  grid-template-columns: 1fr;
}
@media (min-width: 768px) {
  .scoring-layout { grid-template-columns: 1.2fr 1fr; }
}

.scoring-levels {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.scoring-level {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-interactive), transform var(--transition-interactive);
}
[data-theme="dark"] .scoring-level {
  background: var(--color-surface);
}
.scoring-level:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}
.scoring-dot {
  width: 12px;
  height: 12px;
  border-radius: var(--radius-full);
  flex-shrink: 0;
}
.scoring-dot--green { background: #22C55E; }
.scoring-dot--teal { background: #14B8A6; }
.scoring-dot--blue { background: var(--blue); }
.scoring-dot--orange { background: #F97316; }
.scoring-dot--red { background: #EF4444; }

.scoring-level-info {
  flex: 1;
  min-width: 0;
}
.scoring-level-name {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
}
.scoring-level-desc {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: 1px;
}
.scoring-level-pct {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  white-space: nowrap;
  flex-shrink: 0;
}

/* Bell curve SVG */
.bell-curve-card {
  padding: var(--space-6);
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  align-items: center;
}
[data-theme="dark"] .bell-curve-card {
  background: var(--color-surface);
}
.bell-curve-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-4);
  letter-spacing: -0.01em;
  align-self: flex-start;
}
.bell-curve-svg {
  width: 100%;
  max-width: 400px;
}
.bell-curve-note {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-4);
  text-align: center;
  line-height: 1.5;
}

/* ─── INTERPRETATION / PHILOSOPHY SECTION ─── */
.philosophy-grid {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: 1fr;
}
@media (min-width: 640px) {
  .philosophy-grid { grid-template-columns: repeat(2, 1fr); }
}

.philosophy-card {
  padding: var(--space-6);
  background: var(--white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
[data-theme="dark"] .philosophy-card {
  background: var(--color-surface);
}
.philosophy-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-3);
  letter-spacing: -0.01em;
}
.philosophy-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
}
.philosophy-card p + p { margin-top: var(--space-3); }
.philosophy-card--quote {
  grid-column: 1 / -1;
  background: var(--color-surface);
  border-left: 3px solid var(--indigo);
}
[data-theme="dark"] .philosophy-card--quote {
  border-left-color: var(--color-accent);
  background: var(--color-surface-2);
}
.philosophy-card--quote blockquote {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  font-style: italic;
  color: var(--color-text);
  line-height: 1.5;
}
.philosophy-card--quote cite {
  display: block;
  margin-top: var(--space-3);
  font-size: var(--text-sm);
  font-style: normal;
  color: var(--color-text-muted);
  font-weight: 500;
}
.philosophy-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(59, 130, 246, 0.1);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
  color: var(--color-accent);
}

/* ─── TIMELINE ─── */
.timeline {
  max-width: 680px;
  margin-inline: auto;
  position: relative;
  padding-left: var(--space-12);
}
.timeline::before {
  content: '';
  position: absolute;
  left: 19px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--color-border-strong);
  border-radius: 1px;
}

.timeline-item {
  position: relative;
  padding-bottom: var(--space-8);
}
.timeline-item:last-child { padding-bottom: 0; }

.timeline-marker {
  position: absolute;
  left: calc(-1 * var(--space-12) + 4px);
  top: 2px;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}
[data-theme="dark"] .timeline-marker { background: var(--color-accent); }

.timeline-marker span {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--white);
}
[data-theme="dark"] .timeline-marker span { color: var(--slate-900); }

.timeline-content h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-2);
  letter-spacing: -0.01em;
}
.timeline-content p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* ─── FORMATION ─── */
.formation-layout {
  display: grid;
  gap: var(--space-6);
}
@media (min-width: 768px) {
  .formation-layout { grid-template-columns: 1.3fr 1fr; align-items: start; }
}

.formation-card {
  padding: var(--space-8);
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
}

.formation-header h3 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600;
  letter-spacing: -0.02em;
}
.formation-tagline {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

.formation-price {
  margin-top: var(--space-6);
  padding: var(--space-5);
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}
.price-amount {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}
.price-detail {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

.formation-features {
  margin-top: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.formation-features li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.5;
}
.formation-features li svg {
  flex-shrink: 0;
  color: #22C55E;
  margin-top: 1px;
}
.formation-features li strong { color: var(--color-text); font-weight: 600; }

.formation-programme {
  margin-top: var(--space-6);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-border);
}
.formation-programme h4,
.formation-public h4 {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}

.programme-days {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.programme-day {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  padding: var(--space-2) 0;
}
.day-num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-xs);
  color: var(--color-primary);
  background: rgba(49, 46, 129, 0.08);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  min-width: 32px;
  text-align: center;
}
[data-theme="dark"] .day-num {
  color: var(--color-accent);
  background: rgba(96, 165, 250, 0.1);
}

.formation-public {
  margin-top: var(--space-5);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-border);
}
.formation-public p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.formation-card .btn--primary {
  margin-top: var(--space-6);
}

.cycle-card {
  padding: var(--space-6);
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
}
.cycle-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-3);
}
.cycle-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: var(--space-5);
}
.cycle-card strong { color: var(--color-text); font-weight: 600; }

/* ─── FAQ ─── */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.faq-item {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow var(--transition-interactive);
}
.faq-item:hover { box-shadow: var(--shadow-sm); }

.faq-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-5) var(--space-5);
  text-align: left;
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text);
  transition: color var(--transition-interactive);
}
.faq-trigger:hover { color: var(--color-primary); }
[data-theme="dark"] .faq-trigger:hover { color: var(--color-accent); }

.faq-chevron {
  flex-shrink: 0;
  color: var(--color-text-muted);
  transition: transform 0.3s var(--ease-out);
}
.faq-trigger[aria-expanded="true"] .faq-chevron {
  transform: rotate(180deg);
}

.faq-content {
  padding: 0 var(--space-5) var(--space-5);
}
.faq-content[hidden] { display: none; }
.faq-content p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}
.faq-content p + p { margin-top: var(--space-3); }
.faq-content a {
  color: var(--color-accent);
  font-weight: 500;
  transition: color var(--transition-interactive);
}
.faq-content a:hover { color: var(--color-primary); }
.faq-content strong { color: var(--color-text); font-weight: 600; }

/* ─── FOOTER ─── */
.site-footer {
  background: var(--slate-900);
  color: var(--slate-300);
  padding: var(--space-16) 0 var(--space-8);
}
[data-theme="dark"] .site-footer {
  background: #070A14;
}

.footer-grid {
  display: grid;
  gap: var(--space-8);
  grid-template-columns: 1fr;
}
@media (min-width: 640px) {
  .footer-grid { grid-template-columns: 2fr 1fr 1fr; }
}

.footer-logo {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--white);
  display: block;
  margin-bottom: var(--space-3);
}
.footer-brand p {
  font-size: var(--text-sm);
  color: var(--slate-500);
  line-height: 1.6;
  max-width: 320px;
}

.footer-links h3 {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--slate-500);
  margin-bottom: var(--space-4);
}
.footer-links a {
  display: block;
  font-size: var(--text-sm);
  color: var(--slate-300);
  padding: var(--space-1) 0;
  transition: color var(--transition-interactive);
}
.footer-links a:hover { color: var(--white); }

.footer-bottom {
  margin-top: var(--space-12);
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-3);
}
.footer-bottom p {
  font-size: var(--text-xs);
  color: var(--slate-500);
}
.footer-attribution {
  font-size: var(--text-xs);
  color: var(--slate-500);
  transition: color var(--transition-interactive);
}
.footer-attribution:hover { color: var(--slate-300); }

/* ─── SCROLL REVEAL ─── */
.reveal {
  opacity: 1; /* Fallback — visible by default */
}
@supports (animation-timeline: scroll()) {
  .reveal {
    opacity: 0;
    animation: revealFade linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 30%;
  }
}
@keyframes revealFade {
  to { opacity: 1; }
}

/* ─── REDUCED MOTION ─── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}

/* ─── FOCUS VISIBLE ─── */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}